Improved double-tree



H. W. PALMER.

Whifiltree.

No.'88,896. Patented April 13., 1869.

m'ywsss ateut the Letters Patent No. 83,896, dated April 13, 1869.

IMPROVED DOUBLE-TREE.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, HORACE W. PALMER, of Kingsville, in the county of Ashtabula, and State of Ohio, have invented certain new and useful Improvements in Double-Trees; and I do hereby declare that the following is a full and complete description of the same, reference being had to the accompanying drawings, making partof this specification, in which- Figure 1 is a side view of the double-tree or swaybar.

Figure 2 is a view of the edge.

Figure 3, an end view. I

Like letters refer to like parts in the views presented.

The nature of this invention relates to a sway-bar of a double-tree, whiffle-tree, neck-yokes, &c., where the power is applied'to the ends, and the resistance sustained at the centre, by supplying to the same a bracerod, secured at each end by means of a nut, and whereby tension is given to the said rod; also, by supplying to the ends of the bars a cap, or thirnble, for strengthening and protecting the same from injury, thereby making a strong and durable sway-bar, Whittle-tree, or

neck-yoke, without adding materially to the weight thereof.

A, fig. 1, represents the sway-bar, said bar being constructed of wood, and of the ordinary shape and size. Each end of the bar is fitted with a cap, or thimble,

" B, whereby it is protected from abrasion and splitting,

and to whichthe clevises' O are attached in the ordinary way.

D is the brace-rod above alluded to, the ends of which, as will be seen, pass diagonally through the caps, and thereto secured by thefadjusting-mits E. p

F is the dranght staple,lover the bow of which the brace-rod D passes, and 'to which it is loosely attached in a slot, or sleeve, Gr, fig. 2.

By the use of the nuts it will be obvious that any degree of tension can be given to the brace, and at'the same time firmly and permanently secure the caps to the ends of the bar.

By the use of the capsin the manner described, the ends of the bar are secured with a neat and durable protection from the abrasion of the clevises, the said abrasion being usually guarded against by plates of metal, secured to the sides, which, though protecting the sides, afford none to the edges of the bar, which are often cut, or worn into deep notches by the clevis.

I am aware that brace-rods have been used in com bination with the wood-work of double-trees, &c. This I do not claim; but that which distinguishes my invention is the manner of securing the rod to the bar, viz, by means of a nut upon the extreme ends of the rod, and supporting the same in the centre, by the draught-staple, substantially in the manner as above described; also, a further. improvement consists in providing each end with a cap, or thimble, and securing them to the bar, by means of the bracerod and nuts, so that they cannot work off, thereby protecting the ends from abrasion, and from splitting, and at the same time affording a strong and durable means for attaching the clevis to the bar.

\Vhat I claim as my improvement, and desire to secure by Letters Patent, is

The caps, or thimbles B, in combination with the brace-rod I), tension-nuts E, and sway-bar A, in the manner and for the purpose substantially as specified.

\Vitnesses: HORACE W. PALMER.

J. H. Bunnrnen, E. E. \VAITE. 

